The Safeway in Sedona, Arizona provides a good overnight parking experience. As with any parking lot, however, use with caution.
After COVID, lots of Wal-Mart parking lots are no longer available for overnight stays. Thankfully, there is one near Quartzsite.
On a rather dreary day in November of 2016, we spent some time exploring a big touristy place in Myrtle Beach, South Carolina: Broadway at the Beach.